24. Traffic with criminals is dangerous.
　　A. dealing with criminals B. tracking the criminals
　　C. fighting the criminals D. transporting criminals

　　25. Some - such as liquid oxygen - are so cold that they embrittle many constructional materials and evaporate continuously if not refrigerated.
　　A. weaken B. strengthen
　　C. reduce D. cause … to become brittle

　　26. A "Backgrounder" permits newspapermen to publish information given them though without attribution to the source.
　　A. a person who remains behind the scene
　　B. a person providing the background knowledge
　　C. a press conference
　　D. a news agency

　　27. Is it possible that the entire tale is but a garbled account of that voyage and Biarni another name for Leif?
　　A. detailed B. plausible C. distorted D. eye-witness

　　28. Isolated cases of disaffection - or harbingers of a mass cross-border movement that threatens Europe's economic stability? The question is pressing.
　　A. sign B. forerunner C. messenger D. vanguard

　　29. The man we met this morning grows many kinds of plants in his garden, most of which are flowers including succulents and cacti.
　　A. rises B. raises C. plants D. plows

　　30. The scientist contested the assumption of previous scientists that the fate of human beings could not be predicated.
　　A. respected B. supposed C. suspected D. assumed

　　31. One's knowledge of the world, according to humanists, is largely derived by observation, experience and their analysis of the things they observe and experience.
　　A. come from B. determined C. resulted in D. resulted from

　　32. In the last 10 years we have all witnessed an impressive growth in our knowledge about the environments.
　　A. imperative B. observable C. sustainable D. expressive

　　33. In our culture and in our eyes success all too often means simply outdoing other people by virtue of achievement judged by some single scale - income or honors - and coming out at "the top".
　　A. outfitting B. outbidding C. outraging D. outshining

　　34. Social taboos remained strong. Gambling was virtually prohibited except on the racecourses, and drinking of alcohol was discouraged by the closing of hotels at six o'clock and by the shortage of bottle beer.
　　A. factually B. eventually C. consequently D. significantly

　　35. Everyone must be responsible for their own behavior, and most of the young people today are interested, as far as I can perceive, in taking their knocks, just as adults must take theirs.
　　A. taking their jobs B. sharing their ideas
　　C. assuming their responsibilities D. shaking off their responsibilities

　　Part 3 Correcting Grammatical Errors
　　This part consists of 15 sentences in which there is an underlined part that indicates a grammatical error. Below each sentence, there are four choices r

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